PartsTable
Technical Data Sheet
PartsTable / O-RING / 3-902 N4771-70
3-902 N4771-70 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The O-RING is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-579-7548, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
3-902 N4771-70
NSN: 5331-00-579-7548
FSC: 5331 — O-RING
CAGE: C0308 — PARKER HANNIFIN GMBH O-RING DIVISION (DEU)
SPECIFICATIONS
Part Number3-902 N4771-70
NSN5331-00-579-7548
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3-902 N4771-70 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
31-050TInterchangeable
interchangeable cross-reference
interchangeable
3802Interchangeable
interchangeable cross-reference
interchangeable
CPR11Interchangeable
interchangeable cross-reference
interchangeable
203802Interchangeable
interchangeable cross-reference
interchangeable
07-203802Interchangeable
interchangeable cross-reference
interchangeable
271506Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3-902 N4771-70?
3-902 N4771-70 is a O-RING.
What parts can replace 3-902 N4771-70?
There are 26 known substitutes for 3-902 N4771-70: 31-050T, 3802, CPR11 and 23 more. Substitute compatibility should be verified for your specific system.
Is 3-902 N4771-70 still available?
3-902 N4771-70 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026